- libqt4.rc: add detection of the 'moc' command in $MOC.
- libssl.rc: add detection script for openssl.
- default.do.sh: provide a die() function to all .od files. It's just
too useful to not have it (I haven't converted everything to it yet).
- When building out/x/y.z, match against $S/default.z.od and
$S/default.od if they exist.
- *.list files (lists of source/object files to include in a binary)
can now contain *.o files in addition to *.c, *.cc, etc.
- rename compile() to _compile() to avoid polluting the namespace for
scripts called from default.do.sh.
- When building a .so file in the top level directory, no need to
make a symlink of it into the top level directory.
- link.od and link-shlib.od forgot to make use of the $xLIBS variable.
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